Oil and temperature controlled ignition cttt-otjt



April 19, 1932. w ALBERTSON 1,854,571

OIL AND TEMPERATURE CONTROLLED IGNITION CUT-OUT Filed June 5, 1951 2Sheets-Sheet 1 W E fizberzsan' P 1932- w. E. ALBERTSON 1,854,571

OIL AND TEMPERATURE CONTROLLED IGNITION CUT-OUT Filed June 5, 1931 I 2Sheets-Sheet 2 OIL I 5 H5475 I? 10 atf a 48 i 2 f7 56' 6' 4a i 28 IL M$1 6' l I I -1 will Mz n v VV E Hiberis an Patented Apr. 19, 1932 UNITEDSTATES vvul U WILLIAM E. ALBER'I'SON, OF JACKSONVILLE, FLORIDA, ASSIGNOROF ONE-HALF TO MAXEY D. MOODY, OF JACKSONVILLE, FLORIDA OIL ANDTEMPERATURE CONTROLLED IGNITION OUT-OUT Application filed June 5, 1931.

This invention relates to oil and temperature controlled ignitioncut-outs for automotive engines and has for an object to provide amagnetic ignition switch by means of which the ignition circuit will beautomatically opened in the event of the oil pressure or level becomingso low, or the temperature of the cooling system becoming so high, as toendanger the bearings, cylinder walls, and other parts of the motor.

A further object is to provide a magnetic ignition switch including apressure and heat gage operated electro-magnet, and a springpressedpivoted switch segment which is released by the magnet for instantlyopening the ignition circuit upon a predetermined drop in oil pressure,or predetermined rise in temperature, the device being small, compact,inexpensive to manufacture, and being adapted to be located at anyconvenient place on the motor or vehicle.

A further object is to provide a magnetic ignition switch which may beused as the ignition switch on standard equipment. or may be usedindependently of or in connection with the standard ignition switch, andmay be hooked up to control dual ignition including both magneto anddistributor and coil ignition apparatus, or may be used alone tocontroleither magneto ignition apparatus or battery and coil ignitionapparatus.

With the above and other objects in view the invention consists incertain novel details of construction and combinations of partshereinafter fully described and claimed, it being understood thatvarious modifications may be resorted to within the scope of theappended claims without departing from the spirit or sacrificing any ofthe advantages of the invention.

In the accompanying drawings forming part of this specification,

Figure 1 is a sectional view taken on the line 11 of Fig. 2 and showingthe parts in front elevation in full lines in normal position and indotted lines in operative position to open the ignition circuit,

Fig. 2 is an end elevation of the switch with the cover removed,

Fig. 3 is a rear elevation of the device,

Serial N0. 542,392.

showing the terminals and showing the spring for controlling the pushrod,

Fig. 4 is a detail perspective view of the pivoted armature and dog,

Fig. 5 is a fragmentary sectional view showing the push rod andcontrolling spring,

Fig. 6 is a diagrammatic View of the switch applied to a battery, coiland distributer ignition system,

Fig. 7 is a diagrammatic view showing the switch and hook-up for amagneto ignition apparatus, and

Fig. 8 is a diagrammatic view showing the switch and hooks-up for a dualignition apparatus including both magneto and battery, coil anddistributer.

Referring now to the drawings in which like characters of referencedesignate similar parts in the various views, the magnetic ignitionswitch is shown to comprise a base 10 7 preferably formed of insulatingmaterial, such as bakelite or the like, upon which is mounted, near thetop thereof, an angle iron bracket 11. An electro-magnet 12 is securedto the underneath face of the bracket by means of a bolt 13 which alsosecures an angle iron bracket 14 to the bracket 11, which bracket 14forms a mounting for the hereinafter described push rod and shaft of theignition switch.

A combined armature and dog, best shown in Fig. 4, is pivoted on thebase 10 below the electro-magnet and comprises a dog 15 and an armature16, which latter projects laterally from the dog to extend underneaththe core 17 of the electro-magnet, as best shown in Fig. 2. The dog ispreferably pivoted to the base by means of a bolt 18, and asubstantially V-shaped spring 19 is looped over the bolt, one of theterminals of the spring being hooked over the dog, and the otherterminal being hooked over an attaching screw 20, as best shown in Fig.1, to normally hold the dog pressed downwardly to engage the pivotedswitch segment, as will now be described.

The pivoted switch segment 21 is preferably formed of insulatingmaterial, such as bakelite or the like, and is of the general shapeshown in Fig. 1.

The upper edge of the segment is notched, as shown at 22, to receive thedog 15. The lower end of the segment is keyed or otherwise rigidlysecured to a rock shaft 23 which, as shown in Fig. 2, is journaled atone end in a suitable opening in the base 10 and, at the opposite end,projects through a suitable open ing in the above-mentioned front angleiron bracket 14. An ignition switch handle 24 is fixed to the projectingend of the rock shaft for manually turning the shaft clockwise. Forautomatically turning the shaft counter-clockwise, a spiral spring 25encircles the shaft in front of the segment 21, one end of the springbeing rigidly secured to the shaft in any preferred manner, and theopposite end being hooked over a pin 26 carried by the base plate.

The switch points are mounted, as usual, on the pivoted segment 21 and,as best shown in Fig. 2, comprise a pair of arcuate copper or othermetal arms 27 and 28 which are riveted or otherwise fixed at the innerends upon the segment and extend from opposite sides of the segment. Thearm 27 is provided with spaced fingers 29 and 30 which are bentobliquely toward the base 10 and terminate in disks 31 and 32 which havewiping contact with corresponding fixed switch contacts 33 and 34 on thebase 10 and which are connected, as will be hereinafter more fullydescribed, by corresponding conductor wires 35 and 36 preferably to theammeter and to the high tension coil.

Likewise, the arm 28 is provided with fingers 37 and 38 which terminatein disks 39 and 40, respectively, which have wiping contact withrespective stationary switch contacts 41 and 42, carried by the base 10,when the segment 21 is moved by the controlling spring 25 thereofcounter-clockwise to ground the magneto ignition apparatus, thestationary switch contacts 41 and 42 being connected by correspondingconductor wires 43 and 44 to the ground and to the magneto,respectively.

It is now clear that when the pivoted switch segment 21 is manuallyturned clockwise by means of the ignition switch handle 24, the dog 15will lod e in the notch 22, as shown in Fig. 1, and hold the segment inthis position. For the purpose of manually releasing the dog whennecessary, a push rod 45, as best shown in Figs. 2 and 5, is slidablyand non-rotatably fitted in openings in the base 10 and front angle ironbracket 14 and is equipped on the upper side with a tooth 46 having aninclined cam surface 47 on the rear edge which, when the push rod ismoved inwardly, rides upon the underneath edge of the dog 15 and rocksthe dog upwardly against the tension of its controlling spring 19 todislodge the dog from the notch 22 and permit the spring-pressed pivotedsegment 21 being instantly moved in a counter-clockwise direction by itscontrolling spiral spring 25.

The purpose of the electro-magnet 12 is to release the dog automaticallyand, to this end, the electro-magnet coil 48 has one terminal 49 thereofconnected to the above-mentioned stationary or fixed switch contactwhich is in the battery circuit. The other terminal 50 of the coil isconnected to a binding post 51 on the base 10 from which a wire 52leads, as best shown in Figs. 6, 7 and 8, to the oil gage 53 andtemperature gage 54.

Each gage is provided with an insulated bindin post in the path ofmovement of the int icating hand 56 which is, of course, grounded. Saidwire 52 is connected to said insulated binding posts by correspondingwires 57 and 58.

It will be now clear that in the event of the oil pressure or leveldropping dangerously low, for example to two or three pounds, or in theevent of the temperature of the cooling system rising dangerously high,a circuit may be traced from the storage battery B, see Fig. 6, throughthe wire 35, finger 29, arm 27, finger 30, wire 49, coil 48 of theelectro-magnet, and through the wire 52 to the grounded hand of the oilor temperature gage, so that the electro-magnet is energized.

The electro-magnet thereupon attracts the armature 16, thereby rockingthe dog 15 on its pivot and dislodging it from the notch 22 in thesegment 21. The segment is instantly rotated counter-clockwise by itscontrolling spring 21 to disengage the fingers 29 and 30 from the fixedcontacts 33 and 34. which are in series circuit with the battery B andcoil 59 through the wire 35 and the wire 36, see Fig. 6, so that theprimary ignition circuit is broken by such movement of the pivotedsegment 21.

Simultaneously with the opening of the battery circuit, where a dualignition hookup including a magneto is also employed, as shown in Fig.8, the movement of the segment by its spiral controlling spring movesthe fingers 37 and 38 into contact with the stationary switch contacts41 and 42 to ground the magneto, since in such position of the parts acircuit may be traced from the ground terminal of the magneto throughthe wire 44, stationary contact 42, fingers 38 and 37, sta tionarycontact 41 and ground wire 43.

In the diagrammatic view shown in Fi". 7 the switch as shown employed inconnection with magneto ignition only, and, in this connection, it willbe observed that the usual ignition storage battery is dispensed withand, in lieu thereof, a small battery, such as the single cell Hot Shotbattery, marked B, may be connected to the battery terminal 33 forcooperation with the electro-magnet coil which, in this instance, actsin the same manner as above described in detail, as will be understood.

The primary purpose of the push rod 45 is to manually open the ignitioncircuit when ever desired, and, for this purpose, the push rod isequipped, as will be observed by referring to Fig. 2, with a knob 63 onits outer end. A leaf spring 60. as best shown in Fig. 5, is secured atone end to the back of the base 10 by means of a screw 61 and bears withits free end against the inner end of the push rod, which, as will beobserved, projects through an opening in the base plate. The leaf springthus holds the push rod at its outer limit of movement so that the camsurface 47 will be disposed normally out of engagement with the dog. Itis clear, however, that, by simply pushing in on the knob 63, the camsurface will be brought into enga ement with the dog, as abovedescribed, and the dog will be lifted and dislodged from the notch 22 inthe pivoted switch segment 21 to permit the latter being moved by itscontrolling spring to open the ignition circuit, as above described.

It will be observed that when the ignition switch is initially turned toclose the primary ignition circuit, when the motor is cold at starting,the grounded hand of the oil gage will be in engagement with its contact55, so that the electro-magnet will be energized and will automaticallyopen the ignition circuit. In order to counteract the effect of theelectromagnet when starting, it is, therefore, necessary to manuallyhold the ignition switch handle 24: stationary so that the ignitioncircuit from the battery through the coil and distributer will bemaintained closed until the motor starts, even though the parallelelectric circuit through the gages and through the electro-magnet isgrounded at the oil gage.

By referring to Figs. 1 and 3, it will be observed that an additionalstationary contact 62 is provided in the path of movement of the finger3% on the switch arm 27. This switch contact may be grounded when theswitch is used in connection with Electro- Lock cable, so that theigniton circuit from the coil and distributer will be grounded throughthe fingers 29 and 34, being disposed in engagement with the fixedcontact 3-1 and additional fixed contact 32 when the ignition switchsegment 21 is in off positon, or at its extreme limit of movement in acounter-clockwise direction.

It is thought that, from the above descrip tion, the construction andoperation of my invention will be thoroughly understood with out furtherexplanation.

Having thus described the invention, I claim:

1. The combination with the ignition devices of an internal combustionmotor and the cooling and pressure lubrication system thereof, of amagnetic ignition switch including a pressure and heat gage controlledelectro-magnet, a switch segment operably connected to theelectro-magnet armature and electrically connected with the ignitiondevices, said segment being adapted to be instantly released by themagnet to open the circuit to the ignition devices upon a predetermineddrop in oil pressure or predetermined rise in temperature of the coolingsystem, and means for releasing the segment independently of the magnet.

2. The combination with the ignition devices of an internal combustionmotor and the cooling and pressure lubrication system thereof, of amagnetic ignition switch including a pressure and heat gage controlledelectro-magnet, a spring-pressed switch segment having contact fingersextending from opposite sides thereof, a series of stationary contactsadapted to be electrically connected with said ignition devices, anarmature for the electro-magnet having a dog engaging said segment forholding the segment in on position, energizing of said electro-magnet bya predetermined drop in oil pressure or a predetermined rise intemperature actuating said magnet to dislodge said dog and release saidsegment to be moved by its controlling spring to off position to openthe ignition circuit to said devices, and a manually operable push rodhaving a cam surface adapted to engage said dog and release the samefrom the segment independently of said magnet.

3. An electro-inagnetic ignition switch for internal combustion motorsincluding stationary switch contacts adapted to be connected in serieswith the primary ignition circuit of the ignition devices of the motor,an electro-magnet adapted to be connected in series with an insulatedcontact in the path of a grounded hand of an oil pressure gage of themotor and with one of said stationary contacts, a pivotedspring-controlled switch segment having a plurality of switch contactsadapted to engage with the stationary contacts and close the circuit tosaid ignition devices, a pivoted spring-pressed dog engaging saidsegment for normally holding the segment in on position, an armaturecarried by the dog and extending laterally therefrom over the core ofsaid magnet and adapted to be attracted when the magnet is energized bythe oil gage hand impinging against said insulated contact anddislodging the dog from the segment to permit the segment to be moved tooff position by its controlling spring to disengage the segment contactsfrom the stationary contacts and open the ignition circuit, and amanually operable push rod between the segment and dog adapted todislodge the dog from the segment independently of the armature.

4. An electro-magnetic ignition switch for internal combustion motorsincluding stationary switch contacts adapted to be connected in serieswith the primary ignition circuit of the ignition devices of the motor,an electro-magnet adapted to be connected in series with an insulatedcontact in the path of a ground hand of a heat gage of the motor coolingsystem and with one of said stationary contacts, a pivotedspring-controlled switch segment having a plurality of switch contactsadapted to engage with and electrically connect the stationary contactsand close the circuit to said ignition devices, a pivoted springpresseddog engaging in a notch in said segment for normally holding the segmentin on position, an armature integral with the dog and extendinglaterally therefrom over the core ofsaid magnet and adapted to beattracted when the magnet is energized by the heat gage hand impingingagainst said insulated contact and dislodging the dog from the segmentto permit the segment to be moved to off position by its controllingspring to disengage the segment contacts from the stationary contactsand open the ignition circuit, and a manually operable push rod betweenthe segment and dog adapted to dislodge the dog from the segmentindependently of the armature.

5. In a dual ignition system for internal combustion motors, a magnetoand battery ignition devices, a series of fixed switch contacts adaptedto be electrically connected in circuit with said magneto and devices, aswitch segment having switch contacts adapted to engage with andelectrically connect certain of said fixed contacts, a pivoted dogadapted to engage the segment and hold the segment in on position, anarmature carried by the dog, an electro-magnet adapted to be connectedin series with one of said station-' ary contacts and with anmsulated'contact 1n the path of movement of a grounded hand of acontrolling gage of the motor, energizing of said magnet by contact ofsaid hand with said insulated contact attracting the armature anddislodging the dog from the segment, a spring for returning the segmentto oii position upon disengagement of the dog to open said ignitioncircuit and ground the magneto, and means for releasing the dogindependently of the armature.

In testimony whereof I aifix my signature.

lVILLIAM E. ALBERTSON.

